After Abram's entrance into Canaan the Lord promised him an heir by Sarai his wife (Genesis 17:15-17 ). Isaac was pre-eminently the child of promise (Genesis 17:19; Genesis 18:9-15; Genesis 21:1-5 ). He was married to Rebekah, his cousin (Genesis 24:1-67 ). He was Abraham's heir (Genesis 25:5; God renewed the two great promises (Genesis 12:1-3; Genesis 26:1-5 ). Isaac was a farmer and herdsman (Genesis 26:12-25 ).